20-Strong Drone Swarm Deployed in Largest Ever UK Trial The five UAVs used were Blue Bear’s Ghost, Ghost Modular, Red Kite, Cobra, and the hand-launched Flat Pack system. 1 minute read The UK has tested a swarm of 20 fixed-wing drones — the largest military-focused trial of an uncrewed aerial vehicle (UAV) swarm in the country to date. Funded by the Ministry of Defence (MoD), the exercise concluded a series performed by the UK Defence Science and Technology Laboratory’s (DsTL) ‘Many drones make light work’ project. More than 220 sorties were flown during this two-week test. The swarm included five different types and sizes of fixed-wing drones carrying different payloads and with different operational abilities.